How to Unlock the PUK Code on a Mobile Phone If Locked?. GSM phones give you the option to set a PIN code on the SIM card as a security measure. If you only set a phone lock and you lose your ...

On the other hand, you cannot reset your PIN if you have done an M-PESA transaction within the last 24 hours or initiated a SIM replacement in the last 7 days before requesting to reset the PIN.

Done with a long term contract or looking to switch network carriers but keep the phone? Here's everything you need to unlock your Vodafone UK phone!

iPads bought on a network contract may be SIM-locked to that network. Here's how to unlock the iPad - and advice on whether it's legal for you to do so ...